When business partners fall out: resolving shareholder disputes
A shareholder dispute is a divorce where the couple still has to run a company together every morning. They're among the most damaging disputes a business can face — and among the most preventable.
By Robert Festenstein, Head of Legal
Updated 2 July 2026
6 min read
The short version
- Shareholder disputes usually flare over money, control, or one owner not pulling their weight.
- A good shareholder agreement is what turns a potential catastrophe into a manageable process.
- Options run from negotiation and mediation to a formal unfair prejudice petition as a last resort.
- Most disputes end in one side buying out the other — the real question is on what terms.
Why owners fall out
The triggers are depressingly consistent. One owner feels they're doing all the work while another coasts. There's a row about taking money out versus reinvesting. Someone wants to sell or change direction and the others don't. Trust erodes, communication breaks down, and two people who once built something together can barely be in a room. And unlike most disputes, this one comes with a cruel twist: while it rages, they still jointly own — and often still have to run — the same company.
The document that decides everything
Whether a shareholder dispute is a manageable process or a company-wrecking catastrophe usually comes down to one thing: is there a shareholder agreement, and what does it say? A good one will already have set out how decisions get made, how a shareholder can exit, how their shares are valued, and how deadlock is broken. With those mechanisms in place, even a bitter dispute has a defined path through it. Without them, every question is a fresh fight, and the company can be paralysed while the owners argue. This is precisely why the agreement is worth having long before you need it.
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Your options
Most shareholder disputes are best resolved commercially, and it's worth working through the options in order of cost and damage. Negotiation first, often through solicitors, to find terms both can live with. Mediation next — a neutral third party is remarkably effective at breaking these particular deadlocks, and it keeps things private. Only when those fail does the law offer formal routes: most significantly an unfair prejudice petition, where a shareholder asks the court for a remedy (usually an order that their shares be bought out at a fair value) on the basis the company's affairs have been run unfairly against them. It's powerful, but it's slow and expensive — a last resort, not a first move.
Getting out
Strip away the legal machinery and most shareholder disputes end the same way: one side buys out the other, or the business is sold. The entire fight, in the end, is about the terms — the price, the timing, the exit. Which is worth remembering early, because it means the goal isn't to "win." It's to reach a fair exit with as little cost and damage as possible. Keeping that in view is what stops a dispute consuming the very value everyone's fighting over.
Frequently asked questions
What is an unfair prejudice petition?
It's a formal court claim where a shareholder alleges the company's affairs are being run in a way that's unfairly prejudicial to them — for example being excluded from management or denied dividends. The most common remedy is an order that the other shareholders buy out the petitioner's shares at a fair value. It's powerful but slow and costly, so it's usually a last resort.
Can I force my business partner to sell their shares?
Usually only if your shareholder agreement provides a mechanism for it, or through a court process in limited circumstances. This is exactly why the agreement matters so much — a good one sets out how and when shares change hands. Without one, you're reliant on negotiation or expensive litigation.
How do I avoid a shareholder dispute in the first place?
Put a proper shareholder agreement in place while everyone gets on. Agreeing in advance how decisions are made, how someone exits, how shares are valued and how deadlock is broken removes the very questions that disputes are fought over. It's the single best insurance against a fall-out becoming a catastrophe.
Sources & further reading
This article is general information, not legal advice. The law changes and depends on your circumstances — always take advice on your specific situation before acting. Last reviewed 2 July 2026. Buzz Solicitors is a trading name of AD Solicitors Limited, a recognised body regulated by the SRA (no. 8011228).
A solicitor with more than two decades' experience in commercial law, dispute resolution, insolvency and judicial review. Robert acts for businesses, directors and individuals on the matters that carry real consequence — and leads Buzz Solicitors.
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